diff --git a/src/fenrir/soundDriver/dummyDriver.py b/src/fenrir/soundDriver/dummyDriver.py
index 499730d2..ed9be4c7 100644
--- a/src/fenrir/soundDriver/dummyDriver.py
+++ b/src/fenrir/soundDriver/dummyDriver.py
@@ -10,29 +10,46 @@ class driver():
     def __init__(self):
         self.volume = None
         self._initialized = False
+
     def initialize(self, environment):
         self.env = environment
+        self._initialized = True
+        pirnt('SoundDummyDriver: Initialize')        
+
     def shutdown(self):
         if not self._initialized:
             return
         self.cancel()
+        pirnt('SoundDummyDriver: Shutdown')
+
     def playFrequence(self, frequence = 1000, duration = 0.3, adjustVolume = 0):
         if not self._initialized:
             return    
         if interrupt:
             self.cancel()
+        pirnt('SoundDummyDriver: playFrequence:' + ' freq:' + str(frequence) + ' duration:' + str(duration) + ' adjustVolume:' + str(adjustVolume) )
+        pirnt('SoundDummyDriver: -----------------------------------')')          
+
     def playSoundFile(self, filePath, interrupt = True):
         if not self._initialized:
             return    
         if interrupt:
             self.cancel()
+        pirnt('SoundDummyDriver: playSoundFile:' + str(filePath)) 
+        pirnt('SoundDummyDriver: -----------------------------------')              
+
     def cancel(self):
         if not self._initialized:
             return
+        pirnt('SoundDummyDriver: Cancel') 
+
     def setCallback(self, callback):
         if not self._initialized:
             return
+        pirnt('SoundDummyDriver: setCallback') 
+
     def setVolume(self, volume):
         if not self._initialized:
             return    
-        self.volume = volume        
+        self.volume = volume
+        pirnt('SoundDummyDriver: setVolume:' + str(self.volume))